ASTROSAT CZTI

Data Quality Report

Orbit 30479

Creation date: 2024-06-27T20:15:46.467731
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_058T03_9000004380_30479cztM0_level2.evt modeM0/AS1A10_058T03_9000004380_30479cztM0_level2_quad_clean.evt
Size (bytes)383,973,12054,486,720
Size366.2 MB 52.0 MB
Events in quadrant A2,233,833337,621
Events in quadrant B3,667,785335,229
Events in quadrant C2,934,286322,423
Events in quadrant D2,468,935319,805

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097331
B0145141
C0119661
D0103541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4759340.714436%
B4760941.974790%
C47601172.457983%
D4760420.882353%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 5514 4760 0 0 0.00% 0.00%
B 5515 4761 12 12 0.22% 0.25%
C 5515 4761 2 2 0.04% 0.04%
D 5515 4761 12 12 0.22% 0.25%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 192 10490 85.36 576 565 116.3
A 13 254 7865 62.79 576 565 116.3
A 3 137 5991 46.67 576 565 116.3
B 6 159 1275993 11533.49 567 552 110.6
B 0 229 77749 698.07 567 552 110.6
B 4 171 45226 403.98 567 552 110.6
C 3 233 637682 4935.93 546 549 129.1
C 14 238 90412 696.18 546 549 129.1
C 15 208 49649 380.38 546 549 129.1
D 8 195 131772 989.63 556 542 132.6
D 13 104 123898 930.25 556 542 132.6
D 2 250 24897 183.67 556 542 132.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter